/* v3_scts.c */
-/* Written by Rob Stradling (rob@comodo.com) for the OpenSSL project 2014.
+/*
+ * Written by Rob Stradling (rob@comodo.com) for the OpenSSL project 2014.
*/
/* ====================================================================
* Copyright (c) 2014 The OpenSSL Project. All rights reserved.
* are met:
*
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
*
*/
-
#include <stdio.h>
#include "cryptlib.h"
#include <openssl/asn1.h>
#include <openssl/x509v3.h>
-#include <openssl/bn.h>
-#include "../ssl/ssl_locl.h"
+#include "../../ssl/ssl_locl.h"
+
+#if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__)
+# define SCT_TIMESTAMP unsigned __int64
+#elif defined(__arch64__)
+# define SCT_TIMESTAMP unsigned long
+#else
+# define SCT_TIMESTAMP unsigned long long
+#endif
+
+#define n2l8(c,l) (l =((SCT_TIMESTAMP)(*((c)++)))<<56, \
+ l|=((SCT_TIMESTAMP)(*((c)++)))<<48, \
+ l|=((SCT_TIMESTAMP)(*((c)++)))<<40, \
+ l|=((SCT_TIMESTAMP)(*((c)++)))<<32, \
+ l|=((SCT_TIMESTAMP)(*((c)++)))<<24, \
+ l|=((SCT_TIMESTAMP)(*((c)++)))<<16, \
+ l|=((SCT_TIMESTAMP)(*((c)++)))<< 8, \
+ l|=((SCT_TIMESTAMP)(*((c)++))))
+
+typedef struct SCT_st {
+ /* The encoded SCT */
+ unsigned char *sct;
+ unsigned short sctlen;
+ /*
+ * Components of the SCT. "logid", "ext" and "sig" point to addresses
+ * inside "sct".
+ */
+ unsigned char version;
+ unsigned char *logid;
+ unsigned short logidlen;
+ SCT_TIMESTAMP timestamp;
+ unsigned char *ext;
+ unsigned short extlen;
+ unsigned char hash_alg;
+ unsigned char sig_alg;
+ unsigned char *sig;
+ unsigned short siglen;
+} SCT;
+
+DECLARE_STACK_OF(SCT)
-static int i2r_scts(X509V3_EXT_METHOD *method, ASN1_OCTET_STRING *oct, BIO *out, int indent);
+static void SCT_LIST_free(STACK_OF(SCT) *a);
+static STACK_OF(SCT) *d2i_SCT_LIST(STACK_OF(SCT) **a,
+ const unsigned char **pp, long length);
+static int i2r_SCT_LIST(X509V3_EXT_METHOD *method, STACK_OF(SCT) *sct_list,
+ BIO *out, int indent);
const X509V3_EXT_METHOD v3_ct_scts[] = {
-{ NID_ct_precert_scts, 0, ASN1_ITEM_ref(ASN1_OCTET_STRING),
-0,0,0,0,
-0,0,0,0,
-(X509V3_EXT_I2R)i2r_scts, NULL,
-NULL},
-
-{ NID_ct_cert_scts, 0, ASN1_ITEM_ref(ASN1_OCTET_STRING),
-0,0,0,0,
-0,0,0,0,
-(X509V3_EXT_I2R)i2r_scts, NULL,
-NULL},
+ {NID_ct_precert_scts, 0, NULL,
+ 0, (X509V3_EXT_FREE)SCT_LIST_free,
+ (X509V3_EXT_D2I)d2i_SCT_LIST, 0,
+ 0, 0, 0, 0,
+ (X509V3_EXT_I2R)i2r_SCT_LIST, 0,
+ NULL},
+
+ {NID_ct_cert_scts, 0, NULL,
+ 0, (X509V3_EXT_FREE)SCT_LIST_free,
+ (X509V3_EXT_D2I)d2i_SCT_LIST, 0,
+ 0, 0, 0, 0,
+ (X509V3_EXT_I2R)i2r_SCT_LIST, 0,
+ NULL},
};
-static void tls12_signature_print(BIO *out, const unsigned char *data)
- {
- int nid = NID_undef;
- /* RFC6962 only permits two signature algorithms */
- if (data[0] == TLSEXT_hash_sha256)
- {
- if (data[1] == TLSEXT_signature_rsa)
- nid = NID_sha256WithRSAEncryption;
- else if (data[1] == TLSEXT_signature_ecdsa)
- nid = NID_ecdsa_with_SHA256;
- }
- if (nid == NID_undef)
- BIO_printf(out, "%02X%02X", data[0], data[1]);
- else
- BIO_printf(out, "%s", OBJ_nid2ln(nid));
- }
-
-static void timestamp_print(BIO *out, BN_ULLONG timestamp)
- {
- ASN1_GENERALIZEDTIME *gen;
- char genstr[20];
- gen = ASN1_GENERALIZEDTIME_new();
- ASN1_GENERALIZEDTIME_adj(gen, (time_t)0,
- timestamp / 86400000,
- (timestamp % 86400000) / 1000);
- /* Note GeneralizedTime from ASN1_GENERALIZETIME_adj is always 15
- * characters long with a final Z. Update it with fractional seconds.
- */
- BIO_snprintf(genstr, sizeof(genstr), "%.14s.%03dZ",
- ASN1_STRING_data(gen),
- (unsigned int)(timestamp % 1000));
- ASN1_GENERALIZEDTIME_set_string(gen, genstr);
- ASN1_GENERALIZEDTIME_print(out, gen);
- ASN1_GENERALIZEDTIME_free(gen);
- }
-
-static int i2r_scts(X509V3_EXT_METHOD *method, ASN1_OCTET_STRING *oct,
- BIO *out, int indent)
- {
- BN_ULLONG timestamp;
- unsigned char* data = oct->data;
- unsigned short listlen, sctlen = 0, fieldlen;
-
- if (oct->length < 2)
- return 0;
- n2s(data, listlen);
- if (listlen != oct->length - 2)
- return 0;
-
- while (listlen > 0)
- {
- if (listlen < 2)
- return 0;
- n2s(data, sctlen);
- listlen -= 2;
-
- if ((sctlen < 1) || (sctlen > listlen))
- return 0;
- listlen -= sctlen;
-
- BIO_printf(out, "%*sSigned Certificate Timestamp:", indent,
- "");
-
- if (*data == 0) /* SCT v1 */
- {
- /* Fixed-length header:
- * struct {
- * (1 byte) Version sct_version;
- * (32 bytes) LogID id;
- * (8 bytes) uint64 timestamp;
- * (2 bytes + ?) CtExtensions extensions;
- */
- if (sctlen < 43)
- return 0;
- sctlen -= 43;
-
- BIO_printf(out, "\n%*sVersion : v1(0)", indent + 4,
- "");
-
- BIO_printf(out, "\n%*sLog ID : ", indent + 4, "");
- BIO_hex_string(out, indent + 16, 16, data + 1, 32);
-
- data += 33;
- n2l8(data, timestamp);
- BIO_printf(out, "\n%*sTimestamp : ", indent + 4, "");
- timestamp_print(out, timestamp);
-
- n2s(data, fieldlen);
- if (sctlen < fieldlen)
- return 0;
- sctlen -= fieldlen;
- BIO_printf(out, "\n%*sExtensions: ", indent + 4, "");
- if (fieldlen == 0)
- BIO_printf(out, "none");
- else
- BIO_hex_string(out, indent + 16, 16, data,
- fieldlen);
- data += fieldlen;
-
- /* digitally-signed struct header:
- * (1 byte) Hash algorithm
- * (1 byte) Signature algorithm
- * (2 bytes + ?) Signature
- */
- if (sctlen < 4)
- return 0;
- sctlen -= 4;
-
- BIO_printf(out, "\n%*sSignature : ", indent + 4, "");
- tls12_signature_print(out, data);
- data += 2;
- n2s(data, fieldlen);
- if (sctlen != fieldlen)
- return 0;
- BIO_printf(out, "\n%*s ", indent + 4, "");
- BIO_hex_string(out, indent + 16, 16, data, fieldlen);
- if (listlen > 0) BIO_printf(out, "\n");
- data += fieldlen;
- }
- }
-
- return 1;
- }
+static void tls12_signature_print(BIO *out, const unsigned char hash_alg,
+ const unsigned char sig_alg)
+{
+ int nid = NID_undef;
+ /* RFC6962 only permits two signature algorithms */
+ if (hash_alg == TLSEXT_hash_sha256) {
+ if (sig_alg == TLSEXT_signature_rsa)
+ nid = NID_sha256WithRSAEncryption;
+ else if (sig_alg == TLSEXT_signature_ecdsa)
+ nid = NID_ecdsa_with_SHA256;
+ }
+ if (nid == NID_undef)
+ BIO_printf(out, "%02X%02X", hash_alg, sig_alg);
+ else
+ BIO_printf(out, "%s", OBJ_nid2ln(nid));
+}
+
+static void timestamp_print(BIO *out, SCT_TIMESTAMP timestamp)
+{
+ ASN1_GENERALIZEDTIME *gen;
+ char genstr[20];
+ gen = ASN1_GENERALIZEDTIME_new();
+ ASN1_GENERALIZEDTIME_adj(gen, (time_t)0,
+ (int)(timestamp / 86400000),
+ (timestamp % 86400000) / 1000);
+ /*
+ * Note GeneralizedTime from ASN1_GENERALIZETIME_adj is always 15
+ * characters long with a final Z. Update it with fractional seconds.
+ */
+ BIO_snprintf(genstr, sizeof(genstr), "%.14s.%03dZ",
+ ASN1_STRING_data(gen), (unsigned int)(timestamp % 1000));
+ ASN1_GENERALIZEDTIME_set_string(gen, genstr);
+ ASN1_GENERALIZEDTIME_print(out, gen);
+ ASN1_GENERALIZEDTIME_free(gen);
+}
+
+static void SCT_free(SCT *sct)
+{
+ if (sct) {
+ if (sct->sct)
+ OPENSSL_free(sct->sct);
+ OPENSSL_free(sct);
+ }
+}
+
+static void SCT_LIST_free(STACK_OF(SCT) *a)
+{
+ sk_SCT_pop_free(a, SCT_free);
+}
+
+static STACK_OF(SCT) *d2i_SCT_LIST(STACK_OF(SCT) **a,
+ const unsigned char **pp, long length)
+{
+ ASN1_OCTET_STRING *oct = NULL;
+ STACK_OF(SCT) *sk = NULL;
+ SCT *sct;
+ unsigned char *p, *p2;
+ unsigned short listlen, sctlen = 0, fieldlen;
+
+ if (d2i_ASN1_OCTET_STRING(&oct, pp, length) == NULL)
+ return NULL;
+ if (oct->length < 2)
+ goto done;
+ p = oct->data;
+ n2s(p, listlen);
+ if (listlen != oct->length - 2)
+ goto done;
+
+ if ((sk = sk_SCT_new_null()) == NULL)
+ goto done;
+
+ while (listlen > 0) {
+ if (listlen < 2)
+ goto err;
+ n2s(p, sctlen);
+ listlen -= 2;
+
+ if ((sctlen < 1) || (sctlen > listlen))
+ goto err;
+ listlen -= sctlen;
+
+ sct = OPENSSL_malloc(sizeof(SCT));
+ if (!sct)
+ goto err;
+ if (!sk_SCT_push(sk, sct)) {
+ OPENSSL_free(sct);
+ goto err;
+ }
+
+ sct->sct = OPENSSL_malloc(sctlen);
+ if (!sct->sct)
+ goto err;
+ memcpy(sct->sct, p, sctlen);
+ sct->sctlen = sctlen;
+ p += sctlen;
+ p2 = sct->sct;
+
+ sct->version = *p2++;
+ if (sct->version == 0) { /* SCT v1 */
+ /*-
+ * Fixed-length header:
+ * struct {
+ * (1 byte) Version sct_version;
+ * (32 bytes) LogID id;
+ * (8 bytes) uint64 timestamp;
+ * (2 bytes + ?) CtExtensions extensions;
+ */
+ if (sctlen < 43)
+ goto err;
+ sctlen -= 43;
+
+ sct->logid = p2;
+ sct->logidlen = 32;
+ p2 += 32;
+
+ n2l8(p2, sct->timestamp);
+
+ n2s(p2, fieldlen);
+ if (sctlen < fieldlen)
+ goto err;
+ sct->ext = p2;
+ sct->extlen = fieldlen;
+ p2 += fieldlen;
+ sctlen -= fieldlen;
+
+ /*-
+ * digitally-signed struct header:
+ * (1 byte) Hash algorithm
+ * (1 byte) Signature algorithm
+ * (2 bytes + ?) Signature
+ */
+ if (sctlen < 4)
+ goto err;
+ sctlen -= 4;
+
+ sct->hash_alg = *p2++;
+ sct->sig_alg = *p2++;
+ n2s(p2, fieldlen);
+ if (sctlen != fieldlen)
+ goto err;
+ sct->sig = p2;
+ sct->siglen = fieldlen;
+ }
+ }
+
+ done:
+ ASN1_OCTET_STRING_free(oct);
+ return sk;
+
+ err:
+ SCT_LIST_free(sk);
+ sk = NULL;
+ goto done;
+}
+
+static int i2r_SCT_LIST(X509V3_EXT_METHOD *method, STACK_OF(SCT) *sct_list,
+ BIO *out, int indent)
+{
+ SCT *sct;
+ int i;
+
+ for (i = 0; i < sk_SCT_num(sct_list);) {
+ sct = sk_SCT_value(sct_list, i);
+
+ BIO_printf(out, "%*sSigned Certificate Timestamp:", indent, "");
+ BIO_printf(out, "\n%*sVersion : ", indent + 4, "");
+
+ if (sct->version == 0) { /* SCT v1 */
+ BIO_printf(out, "v1(0)");
+
+ BIO_printf(out, "\n%*sLog ID : ", indent + 4, "");
+ BIO_hex_string(out, indent + 16, 16, sct->logid, sct->logidlen);
+
+ BIO_printf(out, "\n%*sTimestamp : ", indent + 4, "");
+ timestamp_print(out, sct->timestamp);
+
+ BIO_printf(out, "\n%*sExtensions: ", indent + 4, "");
+ if (sct->extlen == 0)
+ BIO_printf(out, "none");
+ else
+ BIO_hex_string(out, indent + 16, 16, sct->ext, sct->extlen);
+
+ BIO_printf(out, "\n%*sSignature : ", indent + 4, "");
+ tls12_signature_print(out, sct->hash_alg, sct->sig_alg);
+ BIO_printf(out, "\n%*s ", indent + 4, "");
+ BIO_hex_string(out, indent + 16, 16, sct->sig, sct->siglen);
+ } else { /* Unknown version */
+
+ BIO_printf(out, "unknown\n%*s", indent + 16, "");
+ BIO_hex_string(out, indent + 16, 16, sct->sct, sct->sctlen);
+ }
+
+ if (++i < sk_SCT_num(sct_list))
+ BIO_printf(out, "\n");
+ }
+
+ return 1;
+}
projects / openssl.git / blobdiff